240238199881 has 27 divisors (see below), whose sum is σ = 252371576583. Its totient is φ = 228680184960.

The previous prime is 240238199837. The next prime is 240238199899. The reversal of 240238199881 is 188991832042.

The square root of 240238199881 is 490141.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 107876118025 + 132362081856 = 328445^2 + 363816^2 .

It is not a de Polignac number, because 240238199881 - 2¹¹ = 240238197833 is a prime.

It is a super-2 number, since 2×240238199881² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (240238199081) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1473853906 + ... + 1473854068.

It is an arithmetic number, because the mean of its divisors is an integer number (9347095429).

Almost surely, 2^240238199881 is an apocalyptic number.

240238199881 is the 490141-st square number.

240238199881 is the 245071-st centered octagonal number.

It is an amenable number.

240238199881 is a deficient number, since it is larger than the sum of its proper divisors (12133376702).

240238199881 is an frugal number, since it uses more digits than its factorization.

240238199881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582 (or 291 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 55.

The spelling of 240238199881 in words is "two hundred forty billion, two hundred thirty-eight million, one hundred ninety-nine thousand, eight hundred eighty-one".